baber/WOPTO huggingface dataset:
Patent GB-1465664-A (GB)
Title: Process for preparing terephthalic acid or isophthalic acid
IPC: C07C51/00
Filed: 1975-09-08
Abstract: 1465664 Process for the preparation of terephthalic and isophthalic acid TEIJIN Ltd 8 Sept 1975 [10 Sept 1974] 36838/75 Heading C2C Terephthalic acid or isophthalic acid is prepared by oxidizing para- or meta-xylene in the liquid phase with a molecular oxygen-containing gas in a C 2 -C 4  aliphatic carboxylic acid, e.g. acetic acid in the presence of a heavy metal catalyst, e.g. cobalt or manganese compounds or mixtures thereof, wherein the para- or metaxylene is introduced into the liquid phase of the reaction system while it is entrained by a gas. The xylene may be entrained in the form of vapour by the entraining gas which may be a molecular oxygen-containing gas such as air and pure molecular oxygen with other inert gases such as nitrogen, CO 2 , or argon or any non-reactive gas in the oxidation reaction such as nitrogen, carbon dioxide, helium or argon. The oxidation may be carried out in the presence of bromine or a bromine compound. Examples are described with the aid of a flow diagram.
Patent GB-783445-A (GB)
Title: Improvements in or relating to interference limiters
Inventor: COPE JOHN EDWARD
IPC: H04N5/21
Filed: 1954-12-22
Abstract: 783,445. Radio receiving and non-linear amplifying circuits. PYE, Ltd. Dec. 16, 1955 [Dec. 22, 1954], No. 37079/54. Addition to 681,294. Classes 40 (5) and 40 (6). In a circuit as described in the parent Specification, in which a limiting diode D2 and capacitor C2, Fig. 1, are connected in parallel with the signal detecting diode D1, the input signal applied to the interference limiting diode is arranged to be of greater amplitude than that applied to the signal diode. This may be achieved by employing an auto-transformer T1 with the signal diode D1 tapped down on the transformer. The diodes D1, D2 are connected to a filter F feeding the output stage, or alternatively two filters may be used. The bias on the diode D2 is obtained from a potentiometer P. More effective limiting action is obtained in a modification, Fig. 5, in which the bias for the diode D2 is varied in accordance with the amplitude of the video signal. The output from filter F is phase-reversed in discharge tube V2 and applied to cathode follower V3 connected to the cathode-ray tube. The signal is fed to cathode follower V4 which reduces the band width, the output passing through phasereversing valve V5 to the D.C. restoring diode D3 and thence through cathode follower V6 to supply the bias to diode D2. In a simpler modification, Fig. 6, an in-phase signal is derived from the cathode of tube V2 and fed to the cathode of triode V4A, the anode circuit feeding diode D4 which operates as a bandwidth limiting device, the bias being fed out through cathode follower V6. The autotransformer T1 may be replaced by a bifilar transformer.
Patent GB-645255-A (GB)
Title: Improvements in or relating to hack saws
IPC: B23D51/18
Filed: 1946-12-17
Abstract: 645,255. Engine valve-gear. NAYLOR, S.Dec. 17, 1946, No. 37089. [Class 122(ii)] [Also in Group XXIII] In a valve gear used in the operation of a reciprocating hacksaw by means of compressed air, the air is admitted to the cylinder 2 through a valve controlled by a valve roc 19 slidable within a hollow piston rod 4, the piston 15 being arranged to directly operate the valve at one end of its stroke and tc operate the valve through the valve rod 19 at the other end of its stroke. Inlet and exhaust valves 17, 18 comprise a block 24 in which are formed the ports adapted to be opened and closed alternately by the valve member 23 pivoted at 25 and which operates a pivotal slide 26 mounted at 27. The slide is spring- loaded at 28 and the member 23 is provided with a flange 29 attached to one end of the valve rod 19 movement of which actuates the member 23 to pivot the slide 26 and so open or close the respective ports. With the saw as shown in Fig. 1 the piston 15 and blade 3 are retracted rearwardly by the spring 14, the valve rod retaining the air inlet 17 open. On actuating the trigger control 22 and valve 21, compressed air enters the cylinder 2 via 17, driving the piston and blade forwardly. On reaching the forward end of its stroke the piston rod 4 acting on the abutment 30 of the rod 19 pulls the latter forwardly to actuate the members 23, 26 and shut off the air supply 17 and open the exhaust 18, the spring 14 returning the saw blade &c. to the initial position. This action is repeated so long as the valve 21 is retained open by the control 22.
Patent GB-371207-A (GB)
Abstract: 371,207. Taximeters. ROSENBERG, E., 2, Ant Dvorakova, Brunn, Czecho- Slovakia. June 17, 1931, No. 17541. [Class 106 (iii).] A device which ensures the operation of a taximeter or fare indicator on motor vehicles, motor boats, &c. on the presence of a passenger and which prevents the return of the taximeter to the inoperative position until the passenger leaves comprises a spring-controlled pivoted platform 1 the weight of a passenger on which operates the rod 3 to push up the rod 31 and set in operation the taximeter 5 either directly or indirectly through the intermediary of an auxiliary source of energy, e.g. a tensioned spring. In the construction shown in Figs. 2 and 3 upward movement of the rod 3<1> causes, through the plates or straps 9, rotatable head 8 and lever 7, rotation of the shaft 6 to initiate the operation of the taximeter and causes the pawl 11 to engage in the recess 12 of the wall 13 to retain the taximeter in the operative position. A sealed casing 14 renders the device inaccessible to the driver. Rotation of the shaft 6 by the driver does not disengage the pawl 11 and recess 12 to render the taximeter inoperative which is only done upon the passenger leaving, the spring 4 pulling down the rod 3<1> and disengaging the pawl 11 and recess 12 leaving the rod 6 free to be rotated by the driver to put the taximeter into an inoperative position. In the construction shown in Figs. 4 and 5 upward movement of the rod 31 due to the presence of a passenger releases the detent 19 from the recess 21 and allows the tensioned spring 16 to rotate the lever 17, and with it the shaft 6, from the stop 18 to the stop 18<1> to put the taximeter into operation, the pawl 11 engaging in the recess 12. When the passenger leaves the rod 3<1> descends and the pawl 11 is disengaged thus leaving the lever 17 and shaft 6 free to be rotated by the driver to put the taximeter into the inoperative position, the spring 16 being tensioned and the detent 19 engaging in the recess 21 to retain the taximeter in the inoperative position until a new passenger enters.
Patent GB-774099-A (GB)
Title: Acoustic well logging
Inventor: BRODING ROBERT ANDREW
IPC: G01V1/46
Filed: 1954-08-16
Abstract: 774,099. Geophysical prospecting. SOCONY MOBIL OIL CO., Inc. Aug. 16, 1954, No. 37300/55. Divided out of 774,098. Class 118 (2). A system for providing a log of the acoustic properties of formations penetrated by a well bore, wherein the amplitude of acoustic pulses travelling through the said formations is measured and the relatively slow direct pulse via the borehole fluid is eliminated, comprises a transmitter of acoustic impulses movably positioned in the well bore, a receiver spaced a predetermined distance from, and movable with, said transmitter, means actuated in response to the first acoustic impulses received or to the transmitted impulse to render the amplifier circuit from said receiver conductive for a predetermined time only, and means for measuring the peak amplitude of impulses arriving during this time. The receiver is therefore rendered effective for a period not greater than the time of travel of an acoustic impulse from the transmitter to the receiver via the borehole fluid. In the embodiment of Fig. 1 the transmitter 210 and the receiver 212 are spaced five feet apart and a pulse repetition frequency of twenty per second is used. Upon arrival of the first or desired pulse at receiver 212 a blocking oscillator 245 is triggered via condenser 247 to trigger a multivibrator 246 which causes pentode 224 to conduct. Thus as the pulse is applied via condenser 222 to the input grid of pentode 224 the pentode is rendered conductive and the portion of the pulse arriving at the receiver 212 during the interval that the multivibrator 246 is in its unstable state is amplified and appears as a signal voltage across resistor 226. This is measured by a peak reading electronic voltmeter 263 and/or recorded. A second pentode 230 is connected in parallel with pentode 224, as shown, to permit abrupt suppression of the gain of pentode 224 without the generation of unwanted transients in its output circuit. This suppression must occur such that, for all formations encountered and with a given separation between transmitter and receiver, the pentode 224 is blocked just prior to the arrival of the up-hole pulse. This is determined by the time constant of the multivibrator 246 and may be controlled by the variable resistor 261, and in this embodiment the period of the multivibrator may be 200 microseconds. In a modification (Fig. 3) a signal generated by the transmitter 210 coincident with the acoustic impulse actuates blocking oscillator 245 which triggers the multivibrator 246 to gate the amplifier 275. This enables the period of the multivibrator (and hence the time the amplifier 275 is conducting) to be computed exactly by dividing the spacing of transmitter and receiver by the velocity of sound in the bore hole fluid, and may be of the order of one millisecond.
Patent GB-1424526-A (GB)
Title: Manufacture of glass ceramic articles
IPC: C03B32/02
Filed: 1972-08-10
Abstract: 1424526 Glass ceramics PILKINGTON BROS Ltd 26 July 1973 [10 Aug 1972] 37428/72 Heading C1M A method of manufacturing a fine-grained glass ceramic article from a thermally-crystallizable vitreous material, comprises shaping the vitreous material to form a shaped article having one major axis or plane of symmetry, heating the article at a temperature in the range Tg to Tg + 100 C. (where Tg is the transformation temperature of the vitreous material as determined by differential thermal analysis) to condition the material for subsequent crystallization, and rapidly heating the article at a rate of at least 30 C./minute to a predetermined crystallization temperature to effect fine-grained crystal growth while the article is suspended with the major axis or plane of symmetry in a substantially vertical position. The article which may be in sheet, tube or rod form may be heated in a kiln or alternatively a fluidized solid material may be used as the heat transfer medium. The step of heating the article at a temperature in the range Tg to Tg + 100 C. may be carried out in the course of the rapid heating to the crystallization temperature or it may be completed before such rapid heating is completed. The article may be suspended during the step of heating to a temperature in the range Tg to Tg + 100 C. as well as during the rapid heating to the crystallization temperature. During the process there is little tendency for the article to lose its symmetry. In one embodiment for carrying out the process as shown in the Figure the vitreous material 4 is suspended by tongs, which may be of cordierite, which protrude through the roof 6 of a furnace and which are in turn supported by a rail situated above and outside the furnace. The furnace is divided into three zones through which the glass article passes. Zone 1 is maintained at a temperature between Tg and Tg + 1000 C. In zone 2 the material is rapidly heated to a predetermined crystal growth temperature usually between 800 and 1280 C., and in zone 3 the article is maintained at that temperature to develop its final crystalline structure. Numerous examples of specific crystalline glass are disclosed, having compositions, in per cent by weight, within the following ranges: 45À5-78À5% SiO 2 , 3À9- 30.5% Al 2 O 3 , 0-6À3% B 2 O 3 , 0-12À5% MgO, 0-0À1% CaO, 0-0À4% BaO, 0-4À5% ZnO, 0-0À8% Na 2 O, 0-12À1% Li 2 O, 0-2À5% K 2 O, 0-0À6% As 2 O 3 , 0-3À0% P 2 O 5 , 0-11À5% TiO 2 , 0-7À0% ZrO 2 , 0-0À1% F.
Patent GB-867725-A (GB)
Title: Improvements relating to stitch adjusting devices for sewing machines
IPC: D05B27/22
Filed: 1958-11-21
Abstract: 867,725. Sewing machines. ANKERPHOENIX NAHMASCHINEN A. G. Nov. 21, 1958 [Nov. 22, 1957], No. 37568/58. Addition to 781,156. Class 112 The arrangement claimed in the parent Specification is modified in that the vertical connecting rod, driven by an eccentric on the rotary hook drive shaft, is coupled by a pivot pin to two swinging links situated on one side of the pivot pin, one link transmitting drive to the feed shaft and the other link being associated with stitch length-adjusting means, the arrangement being such that the links, in the zero feed position of the adjusting means, describe about their ends remote from said pivot pin arms which substantially coincide with one another in the region of movement of the pivot pin. A vertical connecting rod 45, driven at its lower end by an eccentric on the rotary hook driving shaft 47, is pivoted at its upper end both to a swinging link 46 and also to a comnosite swinging link constituted by two separate links 42 and 43. Link 46 is pivoted to an arm 54 rigid with the feed advance shaft 50, which is coupled by arms 51 and a pivot pin 52 to the feed bar 53. Links 42, 43 are pivoted to a frame 33, and aligned shafts 30, 34 rigid with the latter are journalled in bearings 32. An arm 31 rigid with shaft 30 is coupled by a linkage 25, 26, 28 to a rotary stitch length-adjusting knob 23. A spring 35 acts on shaft 30 to bias the linkage to zero feed position, when arms 42, 43 are horizontal. When the latter are moved, by the manipulation of knob, 23, above or below the horizontal, feed movement is transmitted to the feed bar in opposite directions respectively.
Patent GB-324773-A (GB)
Title: Improvements connected with sealing devices for use with electric cables and other apparatus
IPC: H02G15/26
Filed: 1928-12-20
Abstract: 324,773. British Insulated Cables, Ltd., and Cresswell, J. N. Dec. 20, 1928. Cable joints and terminals. - A device for maintaining an enclosure full of liquid under pressure, while allowing expansion and contraction to take place, for use with the terminals or the joints and dividing boxes of electric cables and other enclosed electrical apparatus, is arranged so that a column of liquid from the enclosed space is balanaed against a column of liquid of higher specific gravity. In the form shown in the Figure the oil space in the terminal 2 for the cable 1 is connected by a pipe 4 with a vessel 5 itself connected by a smaller pipe 6 with an elevated vessel 7. The tube 6 and the lower parts of the vessels 5, 7 are filled with mercury the level in the vessel 7 being indicated by a float-operated pointer 10. Cocks 12, 13 are provided to enable oil to be drawn off without withdrawing the whole of the mercury. The two liquids may be separated by a sliding piston or the two pipes 4, 6 may lead to two chambers connected by a pipe containing an inert gas.
Patent GB-988997-A (GB)
Title: Packaging machine
IPC: B65B25/18
Filed: 1963-09-25
Abstract: 988,997. Packaging-machines. FMC CORPORATION. Sept. 25, 1963 [Oct. 5, 1962], No. 37642/63. Heading B8C. Loaves to be packaged are fed on a continuously moving endless conveyer 23 to a table 62 and into the path of cam-controlled pushers 24 moved continuously by means of endless chains 82, each loaf entering a reciprocating carrier 27 which travels with the loaf into an opened bag B at a loading station LS, the carrier 27 then withdrawing as the pusher 24 removes the partially-packaged loaf to a discharge conveyer 29 leading to tying mechanism (not shown). The sliced loaves are impelled by bars 56 secured to belts 52 which form the conveyer 23. Guide rails 63, 64 keep the loaves compact, the end 64a of the rail 64 being flexible. A cam track 114, Fig. 2, controlling the position of the pushers 24 has a raised return portion 118 opened and closed by cam-operated gates 120 at either end. The loaves are pushed along rails 149, 151 to the loading station, the rail 151 being laterally adjustable. Flexible fingers mounted on the rails 149, 151 hold the loaves together. The carrier 27 has bag-supporting shields 187, 188, and shoes 1, Fig. 9 (not shown), on to which each loaf is pushed by one of the members 24 after it leaves the rails 149, 151. The carrier 27 is moved by an endless chain 203 at the same speed as the chains 82 carrying the pushers. Supplying and opening bags.-Collapsed bags B of polythene are supplied on an intermittently moving conveyer 22 on which they are held by suction. The bags are opened by a suction cup assembly 228, the lower tip of the bag being held by a gripper 227, Fig. 11, formed by pivoted members 234, 236. The assembly 228 includes movable heads 247, 248, Fig. 1. Curved members 271, 272 for spreading the bag are welded to shafts 277, 278 respectively and moved pneumatically through members 283-289 into the bag mouth, Figs. 12 and 13 (not shown).
Patent GB-320288-A (GB)
Title: Improvements in means for operating polyphase motors from a single-phase source
IPC: H02K17/08
Filed: 1928-12-21
Abstract: 320,288. Spencer, M. C. Dec. 21, 1928. Alternating - current motors.-In a phase-splitting arrangement for running an induction motor on single-phase mains, where one of the motor windings 13 is in series with a transformer 14 the secondary winding of which is connected to a condenser 16, the iron core of the transformer is proportioned so that the magnetizing current increases considerably when the motor speeds up, with the object of suitably reducing the effect of the condenser capacity.
Patent GB-1071287-A (GB)
Title: Method for determining blood serum iron-binding capacity
IPC: G01N33/90
Filed: 1965-09-03
Abstract: 1,071,287. Biological radio-active tracer tests. ABBOTT LABORATORIES. Sept. 3, 1965 [Sept. 30, 1964], No. 37819/65. Heading G1A. The unsaturated iron-binding capacity of serum is measured by incubating a polyurethane foam sponge of intercommunicating cell type containing a strong base anion-exchange resin with a sample of the serum to which has been added an excess of ferric ion containing Fe<SP>59</SP> as a tracer. The radio-activity of the combined mixture and sponge is first measured, then the serum is decanted and the sponge is washed in iron-free water and its radio-activity measured. From the ratio of the two measurements the iron take up of the sponge may be determined, and as this depends upon the amount of iron left over after the serum has been saturated, the unsaturated iron-binding capacity of serum may be deduced. The ferric ion is supplied as ferric ammonium citrate buffered to a pH of 7 to 7À5. The radio-activity is measured in a well-type scintillation counter.
Patent GB-1481360-A (GB)
Title: Sealed batteries
IPC: H01M50/627
Filed: 1974-08-30
Abstract: 1481360 Activating sealed batteries YARDNEY INTERNATIONAL CORP 30 Aug 1974 [11 Oct 1973] 38021/74 Heading H1B A method of activating a sealed battery 10 comprises reducing the pressure in the battery to below atmospheric pressure and releasing water vapour in the battery while the pressure is reduced. The battery is a metal-air battery similar to that described in Specification 1,477,181 and contains hygroscopic potassium hydroxide electrolyte. A pump 50 reduces the pressure in the battery to below 1 mm. of mercury and water is supplied to an evaporator pan 52 via an open valve 58. Mild heat may be supplied to the water by a heating element 60 and the water vapour is circulated in the battery by a motor driven blower 24. The increase in temperature of the battery, due to the condensation of the water vapour at the electrolyte, is controlled by a cooling core 28.
Patent GB-1145490-A (GB)
Title: Penicillin salts and process for their manufacture
IPC: C07D499/00
Filed: 1966-08-26
Abstract: 1,145,490. Penicillin salts. FARBWERKE HOECHST A.G. 26 Aug., 1966 [26 Aug., 1965] No. 38341/66. Heading C2A. Stable physiologically acceptable penicillin salts have the general Formula (I) in which R is a phenyl-alkyl, phenyl α-amino alkyl, phenoxy-alkyl, phenylthioalkyl, phenoxyalkyl substituted in the benzene nucleus by one or more alkyl-mercapto groups, phenylthioalkyl substituted in the benzene nucleus by one or more halogens, dialkoxyphenyl, thienyloxyalkyl or 5-alkyl-3-phenyl-isoxazolyl; R<SP>1</SP> is H, halogen, alkoxy, aralkoxy, unsubstituted or substituted phenoxy, NO 2 , NH 2  or OH; and R<SP>2</SP> is H, halogen, alkoxy, aralkoxy, unsubstituted phenoxy or substituted phenoxy; the alkyl group above having C 1  to C 4  carbon atoms. The salts are prepared by reacting (a) the appropriate penicillanic acid with the appropriate cinnamyl amine (prepared according to Specification 1,046,506) in an organic solvent, or (b) a salt of the penicillanic acid with a salt of the base in aqueous solution. Examples are given of the cinnamyl-amine, 4-nitrocinnamylamine, 4-chloro-cinnamyl-amine, 2,4-dichlorocinnamylamine and 3 - methoxy - cinnamylamine salts of phenacetylamido-penicillanic acid, 4 - methylmercapto - phenoxyacetamidopenicillanic acid, phenoxyacetamido-penicillanic acid, 2,6-dimethoxy-benzoylamido-penicillanic acid and 5-methyl-3-phenylisoxazoloyl penicillanic acid. Pharmaceutical compositions comprise a penicillin salt of Formula (I) and a carrier.
Patent GB-1485757-A (GB)
Title: Drainage access vessel
IPC: E03F5/02
Filed: 1974-08-28
Abstract: 1485757 Access bowl YORKSHIRE IMPERIAL PLASTICS Ltd 28 Aug 1974 [14 Aug 1973] 38410/73 Heading E1C A plastics access bowl for a drainage system has a polygonal cross-section of more than four sides (e.g. an octagon) and the lower portion of the bowl converges towards an outlet in the bowl's bottom. The bottom may be part spherical. The sides of the bowl may taper towards the bottom.
Patent GB-1318747-A (GB)
Title: Gear-shift lever for a vehicle
IPC: F16H59/04
Filed: 1970-08-10
Abstract: 1318747 Handles DAIMLER-BENZ AG 10 Aug 1970 [6 March 1970] 38466/70 Heading B4K [Also in Divisions B7 and F2] A vehicle gearshift lever comprises a padded cap which is extended over a part of the length of the lever. The padded cap 2 comprises a knob part 4 adjoining a sleeve 5 both of which are surrounded by plastics foam. The cap 2 may be pressed on or screwed to the rod 1. The knob part 4 and sleeve 5 are preferably made of a polyamide material and the foam of polyurethane.
Patent GB-1219914-A (GB)
Title: Improvements in or relating to slurry forming apparatus
Inventor: HARRIES DAVID ALEXANDER
IPC: B65G53/30
Filed: 1967-08-21
Abstract: 1,219,914. Slurry mixing apparatus. MITCHELL CONSTRUCTION KINNEAR MOODIE GROUP Ltd. (D. A. Harries). 26 July, 1968 [21 Aug., 1967], No. 38485/67. Heading B1C. The apparatus has a receiver 32 with inlets 17, 37 for clay and water respectively and a short tubular outlet 41 to the face of a beeter or cutter, comprising a rotatable disc with bars 48, in a chamber 42. The disc is rotated at about 2,900 r.p.m. and the resulting slurry discharged at 67. The tube 46 and chamber 58 are filled with lubricant.
Patent GB-1013278-A (GB)
Title: Feeding system for compressed air for air blast electric circuit breakers
IPC: H01H33/30
Filed: 1962-10-11
Abstract: 1,013,278. Air blast switches. ALLMANA SVENSKA ELEKTRISHA A.B. Oct. 11, 1962 [Oct. 12, 1961], No. 38505/62. Heading H2B. In a system feeding compressed air to a number of air blast circuit breakers 7 the pressure levels in the storage tank 3, in the distribution network 5 and in the circuit breaker tank 11 respectively are maintained such that their ranges of regulation do not overlap. The pressure in the circuit breaker tank 11 is controlled by a pressure reducing valve 9, itself controlled by the pressure within the tank 11.